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Our Shark Education Program- Giant Sharks with Giant Teeth
fossilsonwheels posted a topic in Member Collections
Our final stop in the Shark program is of course the giant Sharks of the Miocene. We wrap our adventure through the timeline of shark evolution by giving the kids what they expect to see, big shark teeth. Truthfully, we do not have many large shark teeth. I went for interesting teeth not big teeth but we have a few that will grab the kids attention. We give a very brief introduction to the giant sharks with a 2 inch Otodus tooth. We can spend too much time on Otodus or the ancestors of Megalodon as it just do not have time ( plus we do not have teeth from Auriculatus, Angustidens, or Chubutensis). After that brief bit, we ask the kids a question.... What shark is the ancestor of the modern Great White ? We give the kids a chance to answer that question for themselves by connecting them to the sharks that swimming in the ocean off the coast of California 12 million years. I want to explore the origins of the most well known modern shark and connect them to the fossil rich area just 6 or so hours south of where they live so we journey to Sharktooth Hill to finish the program. Isurus planus was a fairly large shark and probably reached lengths of over 20 feet. I have not found a lot of material about planus but I would think that based on tooth size, 20 feet seems possible. I have seen 2 inch planus teeth though I have nothing that big myself. We also show the kids a couple Isurus desori teeth only to mention that they MIGHT be related to modern Short-fin Makos. We then jump into another species that is present at STH and the one the kiddos will be most familiar with, Megalodon. This is obviously a super important species to talk about because it is the most popular prehistoric shark. It is the T-rex of sharks. Biggest teeth of any shark found so far. Most likely the largest shark ever and quite possibly the largest fish. They ate whales. They were also common and the apex predator in the worlds oceans during their time. We do not know what they look like but my son is working on his version of Megalodon and it has elements of a basking shark to it along with the traditional Great White like appearance. I will tell the kids that for a long time, Megalodon was thought to be the ancestor of great whites but science has uncovered another possible contender for being the ancestor of great whites. Carcharodon hastalis was a large shark that probably reached 30 feet in length. They had large teeth and were probably fast swimming ambush predators. I remember reading somewhere, that evidence existed from STH that the Broad-tooth White Shark hunted early pinnipeds from underneath, just as modern white sharks do. I can not remember where I read that and I want to track that down again to verify before saying that to kids. Anyway, we explain that they were probably very similar in appearance to great whites and filled a similar ecological role. I will add that transitional teeth have been found that are a pretty conclusive link the chain of white shark evolution but we want them to check out the teeth and judge for themselves. Our presentation teeth Pic 1 I. planus and I. desori. These are not the exact teeth for program. I do have a few bigger teeth but these were in my desk as I am doing this lol Pic 2 Our 5.08 inch Megalodon tooth and the tooth that I suspect will be the most popular in the presentation. Not the prettiest nor the biggest but it is still a really big tooth to me. We also use a 3 inch tooth for the presentation but I did not photograph it. Pic 3 a 2 inch hastalis, a 2.5 inch hastalis, and one that I personally think is cooler than even Megalodon, a 2.54 inch Great White. It is blue. It just looks cool and I think 2.54 is pretty large for a white shark tooth. We wrap it up with questions from the kids while we go around the classroom handing out shark teeth to the students. If you happened to read all of these, you are a good soul because these are long winded posts I know lol Thank you to all who commented and offered encouragement. I will probably start putting up the marine mammal stuff next.- 4 replies
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This was a prep I've last year, but for some reason I've never posted it on the forum. So I thought I might change that. Last year I was fortunate enough to take a visit to the Ernst Quarries and dig for some shark teeth. Although most of the fossil I've taken home are either bones, four partial regular-sized teeth, and mostly tiny partials (some of which I accidentally damaged while digging ), the biggest find of the day was this large Cosmopolitodus hastalis tooth with its crown partially sticking out of the matrix. When Rob noticed the tooth, he initially estimated it to be ~2 inches long and insisted that I keep the tooth in the matrix, saying something like "The tooth itself is worth about $15. If you keep the tooth in the matrix, it'll be worth $60". Although my reason for visiting the Ernst Quarries was to find shark teeth to keep rather than to sell, I for some reason decided to keep the tooth in the matrix. However, I still had to prep this baby when I got home! Below is the tooth how I found it. This was going to be my first (and so far only considerate) prep I've ever done. Rob told me that the matrix can easily be scratched away using a fingernail and so taking his words and some advice I've gotten from the forum regarding something else, I grabbed one of my mom's needles and started quite literally digging off the siltstone. After around 10 minutes, a perfect root base showed up. This tooth is obviously going to be a perfect whole, so you just gotta keep scraping off the matrix. One really helpful thing I've realized at this point is that the needle I was using was perfect for such beginner's prep- it was strong enough to remove matrix effectively but not enough to do any damage to the tooth itself.
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- mako
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Hi everybody, it's been a long time since I've written something on the forum but I read the different thread pretty much every day. Observing in the shadow like Batman but without money, a cool costume and with an hernia just like every fellow 21 yo. However I've recently acquired a Carcharodon sp. tooth from Bahia Iglesia, labelled as an C. hastals with some sort of serration. From what I've read serration in this species might indicate some sort of patology/transitional form. In this case the cusplets/serrations are pretty much symmetrical on both side of the crown so I'm leading toward the second option. So, is this a transitional form of C. hastalis or an early C. hubbelli ? How can I distinguish between the two when the diagnostic characters aren't so obvious? I've also read that tooth from both species tend to have different characteristic if collected from different sites (like a C. hubbelli tooth where the serrations are just barely visible on the enamel) so I'm very confused. Last question: Teeth where the serrations are confined in small part of the enamel are linked just to early C. hubbelli (obviously if belonging to this specie) or is more related to individual differences into the population as a whole? Thanks to all for the answers.
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- bahia iglesia
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A couple nicer teeth from my hunts in Cape Town (South Africa) over Christmas.
Pamar posted a topic in Fossil Hunting Trips
Good day to everyone! Thought I’d share some the teeth found on Milnerton and Big Bay beach here in South Africa. Any help identifying would be appreciated - I’m still relatively new so the more worn and broken teeth have me clueless. More pictures to follow!- 19 replies
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- carcharodon
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Are tyrannosaurus-rex teeth rare?
Oxalaia posted a topic in Is It Real? How to Recognize Fossil Fabrications
Why are t-rex teeth so expensive compared to carcharodontosaurus teeth, are they alot rarer? -
Does anyone know if they ever reopened the PCS phosphate mine in Aurora? Douglas
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My son and I found two fossils. We don't have a clue what they are. Can anyone help us?
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I have recently been given a number of shark teeth by a relative who used to collect. I would appreciate any help that members might be able to offer. I will post 3 photos. On the first photo am assuming the 4 on the left are Sand Tiger and the middle bottom 2 are Odotus? Unsure about the rest.
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Hi Nicky here! This is my small fossil collection which I started since I was 10 and expanded it when I was 18 If you have questions or have any suggestions for me please feel free to ask/tell My collection This is a overview of what I have. This is one of my favourites, the Spinosaurus I loved the creature when I first saw him in Jurassic park 3 and ever since it is one of my favourite carnivores! Carcharodon, A pretty tooth in my opinion. One of my newer tooth that I got, It is not specified what Kind of raptor it is but maybe you guys know? It's the smallest tooth that I currently own! Mosasaurus, one of the first teeth that I got and It is in my collection for a very long time. Plesiosaurus, This tooth is pretty cool in my opinion since it comes from the plesiosaurus which I find to be a very interesting reptile. Megalodon, Yes you read that right! a very bad condition meg tooth but never the less I find the unique look very cool. Otodus Obliquus, I fell in love when I saw the tooth and how it was stuck in the stone. Dalpiazia Stromeri, A tooth I got because it was one of the prey that the spinosaurus hunted on so I needed this one! Flexicalymene Retrorsa, My first trilobite and a cool looking one as well! Leptolepis, I found this fossil but I do not know allot about this creature so if you guys know more please tell me! Atlasaurus imelaki, Also a dinosaur that I do not know allot about but this piece was very cool. Oviraptor eggshell and a titanosauria eggshell, I always wanted a piece of a dinosaur egg so I got two shells! Mammoth hair and Amber with an insect, Cool things to own in my opinion. Dinosaur bone fragments, I picked these up on my trip in the USA when I was 10 good memories of visiting that shop :D. Ammonite, A small piece of ammonite which looked pretty cool to pick up. Whale ear, I got this from the same guy that gave me the Megalodon tooth in spain. Big ammonite, It is 40 cm in diameter and weights 14 kg this big ammonite is a big piece of my collection! Those were my fossils I got big plans to get more and bigger!
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- plesiosaurus
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First time at GMR, didn't find the whale tooth or vertebrae that I wanted to find, but I'm pretty happy with how it turned out! Was away from my vehicle for four hours. Was not prepared for all of the glass though! Curious if anyone can identify anything in the last two pictures. The small piece isn't supposed to be in that. I'm not sure if the black thing is anything, I just thought it had an unusual pattern.
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From the album Sharks and fish
Megalodon tooth and tooth fragments. -
Hi all, the other day I went out hunting found some really cool stuff, which I'll post soon, but I find these 3 interesting teeth which I think are posterior megs, though I think one (smallest) is more likely than the other two. They were found in Havelock NC.
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I am looking to buy similar Megalodon Tooth with No Repairs/Restorations. Here is a listing that sold recently. I am attaching photos. How much do you think the fair value of this one.- Appreciate your thoughts. Thank you.
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part 3
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part 2 - mako? GW? hammerhead? maybe lemon?
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My 7-year old nephew got a bag of tiny sharks teeth at the beach, and since Uncle K (me) has a display of large fossilized sharks teeth in his office, I must be able to ID his teeth for him. There are 11 teeth TBI, in 7 seperate photos, so I'll post them in a series Please help!!!!! Uncle K
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Hey everyone. This is my first post. I found my first real heart-stopper shark tooth (only 2 inches but beautiful) last week and have had some trouble identifying it. I have seen several that looked almost identical except for the fact that mine has no serrations and it doesn't seem like it ever did. The other teeth in question are just fragments. I think that they are Megs. One of them, however, looks like it had a deep 'U-shaped' root.
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Megalodon Tooth first time buyer!
Martybc3 posted a topic in Is It Real? How to Recognize Fossil Fabrications
Just bought my first Megalodon tooth, does it look restored? I would guess not. The seller says not restoration or repair has been done to it. 6.23 inch tooth! What you guys think?- 6 replies
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- first tooth
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FYI @eannis6 @paxhunter @WhodamanHD I have a coworker who is good with woodworking. Here's his youtube channel with some of his work: https://www.youtube.com/channel/UCjVTgldNSjHdKZj3i24QA-A He used a laser wood etcher to create these plaques for me. Phase two is I'll glue some masonite onto the back and then apply E6000 clear epoxy to contain the tooth. Here's a link to the E6000: https://www.michaels.com/e6000-craft-adhesive/10192536.html Attached is a picture of two teeth courtesy of a trade with @mattbsharks FYI - @SailingAlongToo I'll hang on to one of these for you.
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I wasn't sure where to post this thread, but I have a few fossils that I'd like to either buy or build stands for. I have seen lots of display stands (looks like a wire frame and a metal base) for carch teeth, and mosasaur teeth- that's what I'm looking for but I cant seem to find any for sale on the internet! Not interested in the little plastic megalodon stands, I'm looking specifically for a small wire frame stand where the tooth is held in place by its natural taper. Looking specifically for spinosaurus, carch, and mosasaur tooth stands. Any help would be greatly appreciated, thank you! N
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I have some questions surrounding the extinct species of Giant White Shark, Cosmopolitodus hastalis. I think it was a fascinating creature, but for reason it doesn't seem to be brought up much. As far as I know, it was a very large shark that lived during the Miocene Epoch, and scientists believe it to be a possible ancestor to the extant Great White Shark, the biggest and meanest shark of our present day oceans. What I'd like to know is what was this shark really like? Did it look similar to the Great White? How do we think it behaved? How exactly does it fit into the lineage of the Great White? How big was it? Did it share the seas, or even possibly become prey for, the mighty O. megalodon? And finally, WHY do people call it "Mako" if it clearly isn't one?? Obviously, not all of these questions have concrete answers but I'd like to hear what you all know about the species. Google search results can only tell so much. Do you know of any good sources where I could read up about it in greater detail? I just think it's a really cool species, and I'd love to know more about it. Thanks!
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Hello forum, I came across this at a rock/fossil shop while on a recent road trip. It was labeled as Carcharodontosaurus vertebra from Kem Kem. The shop owner said probably mid-back vertebra. The piece is approximately 12 inches wide and 12 inches across. Any help identifying is greatly appreciated.
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Hello! First time posting on the forum so any help is good! I recently went hunting for a few hours and was able to have a decent day by myself at the water. I need help to ID the two teeth I posted up-closes of. The fragment would've been a sweet tooth if whole and I wish the other tooth had the other cusp! I believe both teeth are from the same species of shark, but I have never found a species like this. I have never heard of Carcharocles angustiden being found in the MD/VA area and the area I was at I believe is mostly early Miocene so I was thinking it might be a Carcharocles chubutensis??? I also found some decent Makos and a very nice Barracuda tooth which I thought was pretty cool.
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Updating My Exotic Meg Teeth Collection Italy, Japan, Indonesia
Ryann10006 posted a topic in Member Collections
Added three new teeth in recent times to my collection of exotic meg teeth, I'd like to share since there,s not to many images from these localities out there, the photos maybe in shabby quality because I pulled them directly from my Instagram page to save time. 1) This partial tip of a meg was found in the Chiba prefecture of Japan! Acquiring this, even just a fragment was a real pain in the butt as megs from Japan are extremely scare. 2) Even though its not a Meg of course but still being the closest ancestor, this 3.1inch chubutensis tooth was found at a land site in Lecce, Italy with gorgeous color! 3) This tooth measuring 4.1 inches came from new site in Bangkalan City, Java, Indonesia. A majority of the megs here were found with absolutely terrible preservation so this one is one of the best out of the bunch! A few more pics of these teeth can be found on their posts on my page at https://www.instagram.com/nyislandfossils/ if its ok to post this here.
